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Bicycle control apparatus for bicycle assist device and bicycle assist device

Active Publication Date: 2018-04-17
SHIMANO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present patent text is related to a bicycle control apparatus that can control a bicycle assist device. The apparatus includes a controller that can control an assist motor which helps to shift gears in the bicycle transmission. The controller uses the position of a sprocket in the transmission to determine the output of the assist motor. The technical effect of this invention is to improve the efficiency and comfort of bicycles by assisting the rider in shifting gears.

Problems solved by technology

It has been found that the control apparatus disclosed in Japanese Patent No. 3,717,076 does not consider the riding conditions of the bicycle in terms of controlling of the output of the assist motor when shifting gears.

Method used

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  • Bicycle control apparatus for bicycle assist device and bicycle assist device
  • Bicycle control apparatus for bicycle assist device and bicycle assist device
  • Bicycle control apparatus for bicycle assist device and bicycle assist device

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Embodiment Construction

[0036]Selected embodiments will now be explained with reference to the drawings. It will be apparent to those skilled in the bicycle field from this disclosure that the following descriptions of the embodiments are provided for illustration only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

[0037]Referring initially to FIG. 1, a bicycle 10 is illustrated that is configured in accordance with a first embodiment. The bicycle 10 basically comprises a frame 12, a handlebar 14, a front wheel 16, a rear wheel 18, a drive mechanism 20, a battery unit 22, a front transmission 24, a rear transmission 26, an operating device 28, a pair of suspension adjustment devices 30F and 30R, a seat adjustment device 32 and an assist device 34.

[0038]The drive mechanism 20 comprises a pair of crank arms 36, a crankshaft 38, a pair of pedals 40, a front sprocket assembly 42, a rear sprocket assembly 44 and a chain 46.

[0039]The crank arms 36 are ro...

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Abstract

A bicycle control apparatus is provided for controlling a bicycle assist device. The bicycle control apparatus includes a controller that is configured to control an assist motor for assisting a manual drive force of a transmission with a plurality of sprockets. The controller is configured to control an output of the assist motor based on a rotational position of a sprocket of the plurality of sprockets when the transmission performs a shifting operation to switch a chain between two of the plurality of sprockets.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to Japanese Patent Application No. 2015-005857, filed on Jan. 15, 2015. The entire disclosure of Japanese Patent Application No. 2015-005857 is hereby incorporated herein by reference.BACKGROUND[0002]Field of the Invention[0003]This invention generally relates to a bicycle control apparatus for a bicycle assist device and a bicycle assist device comprising the bicycle control apparatus.[0004]Background Information[0005]Some bicycles are provided with an assist motor to assist the rider in driving the bicycle. A bicycle control apparatus is often provided to control the assist motor. One example of a bicycle control apparatus for controlling a bicycle assist device is disclosed in Japanese Patent No. 3,717,076. In this patent, the bicycle control apparatus restricts the output of an assist motor when a bicycle transmission shifts gears, and then releases the restriction on the output of the assist motor bas...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B62M6/00B62M6/50B62M6/45B62M6/55
CPCB62M6/45B62M6/55B62M6/50
Inventor TSUCHIZAWA, YASUHIRONODA, SHINICHIROSHAHANA, SATOSHIUSUI, MAKOTOKATAOKA, YUKI
Owner SHIMANO INC
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